10c4:ea91 — CP2112 HID SMBus/I2C Bridge for CP2614 Evaluation Kit

Silicon Labs

Vendor ID: 10c4
Product ID: ea91
Combined: 10c4:ea91
Decimal: 4292:60049

What is this device?

This is the USB identifier for a CP2112 HID SMBus/I2C Bridge for CP2614 Evaluation Kit manufactured by Silicon Labs. The vendor ID 10c4 is registered to Silicon Labs with the USB Implementers Forum, and ea91 is the product ID that Silicon Labs assigned to this particular model. When you run lsusb on Linux, this device appears as 10c4:ea91 Silicon Labs CP2112 HID SMBus/I2C Bridge for CP2614 Evaluation Kit.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 10c4:ea91 Silicon Labs CP2112 HID SMBus/I2C Bridge for CP2614 Evaluation Kit

You can filter directly with lsusb -d 10c4:ea91, or get the full descriptor dump with lsusb -v -d 10c4:ea91. Kernel messages from dmesg show the same pair as idVendor=10c4, idProduct=ea91.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_10C4&PID_EA91
USB\VID_10C4&PID_EA91&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_10C4&PID_EA91"

macOS

$ system_profiler SPUSBDataType
    CP2112 HID SMBus/I2C Bridge for CP2614 Evaluation Kit:
      Product ID: 0xea91
      Vendor ID: 0x10c4  (Silicon Labs)

Driver help

Having driver issues with this device? Most USB devices are handled by a generic class driver; if yours shows up as an unknown device, confirm the ID above first, then check the manufacturer's downloads page. Silicon Labs official support →

Raw usb.ids entry

The exact lines this page is generated from, in the upstream source file:

10c4  Silicon Labs
	ea91  CP2112 HID SMBus/I2C Bridge for CP2614 Evaluation Kit

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